What three things happen when air is warmed?

it expands

it contracts

it becomes lighter

it becomes heavier

it rises

it sinks

Oil and water placed in a jar will separate. Even when shaken and mixed, the oil still separates from the water. Which best describes oil and water? Oil and water are highly soluble because they have separate chemical properties.

All meridians converge at

The seven colors of the rainbow are found in which parts of the electromagnetic spectrum

5. A certain spring that obeys Hooke's Law stretches 30 cm when a load of 0.35 N is added to it. How much energy is stored in the spring when it is compressed 5.0 cm?

a force is something that causes change in motion. what provides the force that made the cart speed up?

Which defintion of heat is most scientifically accurate

What is the name of the effect that causes water to travel at an angle to trade winds?

Two books with different masses fall off the same bookshelf. As they fall, which has more kinetic energy and why

Which of the following is an example of convection? a a hot object transferring heat to a cooler one b the rays of the Sun warming the earth c a hot oven warming the air around it d hot air rising and cooler air falling

Bob drove from home to work at 60 mph. after work the traffic was? heavier, and he drove home at 50 mph. his driving time to and from work was 1 hour and 28 minutes. how far does he live from his? job?